It's not clear from the available vision what started the fight but according to theRacing Post, one witness said "a man bumped into another man and then it all kicked off."

Police were called to the track and a 26-year-old man was arrested on suspicion of affray and possession of a controlled drug following the incident.

"At around 4.50pm, officers were called to Haydock Racecourse following reports of a disturbance involving a group of men," a Merseyside Police statement said.

"Officers attended the scene and following further enquiries, a 26-year old male was arrested on suspicion of affray and possession of a controlled drug. No complaints were made and there have been no reports of any injuries at this time.

"The arrested male has been taken to a local police station for questioning."

It is not the first violent incident that has been captured on film at a UK racetrack in recent years. Last May there were brawls on successive weekends at Goodwood and Ascot.